Usage of new API, cleanups (reduced)

src/com/github/rjeschke/neetutils/Objects.java

-/*
- * Copyright (C) 2012 René Jeschke <rene_jeschke@yahoo.de>
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.github.rjeschke.neetutils;
-
-import java.util.Collection;
-import java.util.List;
-import java.util.Map;
-
-/**
- * 
- * @author René Jeschke (rene_jeschke@yahoo.de)
- */
-public final class Objects
-{
-  private Objects()
-  {
-    //
-  }
-
-  @Deprecated
-  public final static boolean implementsInterface(final Object o, final Class<?> interfaceClass)
-  {
-    return implementsInterface(o.getClass(), interfaceClass);
-  }
-
-  @Deprecated
-  public final static boolean implementsInterface(final Class<?> clazz, final Class<?> interfaceClass)
-  {
-    if (clazz.equals(interfaceClass))
-    {
-      return true;
-    }
-    final Class<?>[] is = clazz.getInterfaces();
-    for (int i = 0; i < is.length; i++)
-    {
-      if (is[i].equals(interfaceClass))
-      {
-        return true;
-      }
-    }
-    return false;
-  }
-
-  public final static boolean isString(final Object o)
-  {
-    return o instanceof String;
-  }
-
-  public final static boolean isBoolean(final Object o)
-  {
-    return o instanceof Boolean;
-  }
-
-  public final static boolean isNumber(final Object o)
-  {
-    return o instanceof Number;
-  }
-
-  public final static boolean isMap(final Object o)
-  {
-    return o instanceof Map;
-  }
-
-  public final static boolean isList(final Object o)
-  {
-    return o instanceof List;
-  }
-
-  public final static boolean isCollection(final Object o)
-  {
-    return o instanceof Collection;
-  }
-
-  public final static boolean equals(final Object a, final Object b)
-  {
-    if (a == b)
-    {
-      return true;
-    }
-
-    if (a == null)
-    {
-      return b == null;
-    }
-
-    if (a.getClass() != b.getClass())
-    {
-      return false;
-    }
-
-    return a.equals(b);
-  }
-
-  public final static boolean isNullOrEmpty(final Object obj)
-  {
-    if (obj == null)
-    {
-      return true;
-    }
-
-    if (obj instanceof Collection)
-    {
-      return ((Collection<?>)obj).isEmpty();
-    }
-    if (obj instanceof Map)
-    {
-      return ((Map<?, ?>)obj).isEmpty();
-    }
-    if (obj instanceof String)
-    {
-      return ((String)obj).length() == 0;
-    }
-
-    return false;
-  }
-
-  @SuppressWarnings("unchecked")
-  public final static <A> A uncheckedCast(final Object a)
-  {
-    return (A)a;
-  }
-}